This is another old puzzle, but not so well known as it should be.
A hiker leaves his tent and walks five miles due south, turns and walks five miles due east, and finally walks five miles due north. You would expect the walker to have a further trek of five miles due west in order to get back to the tent.
Oddly, the hiker is back at the tent.
How is this possible?
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Answer at 9.00 on Monday